Isolated short attosecond pulse generated using a two-color laser and a high-order pulse

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.063813· OSTI ID:21437958

Du, Hongchuan; Hu, Bitao ^[1]; Wang, Huiqiao ^[2]

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1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 (China)
2. Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000 (China)

An efficient method to generate an isolated short attosecond pulse is investigated theoretically. A broadband extreme ultraviolet supercontinuum harmonics can be generated when a model He{sup +} ion is exposed to the combination of an intense few-cycle laser pulse and a low-frequency field. By properly adding a 27th harmonics pulse to resonantly excite the He{sup +} ion, the intensity of the high-order harmonic generation (HHG) plateau is enhanced by 3-4 orders of magnitude. As a result, an isolated 24-as pulse with a bandwidth of 138 eV can be obtained directly from the supercontinuum around the cutoff of HHG.

• OSTI ID: 21437958
• Journal Information: Physical Review. A, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevA.81.063813; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
EV RANGE
EXTREME ULTRAVIOLET RADIATION
HARMONIC GENERATION
HARMONICS
HELIUM IONS
LASER RADIATION
PULSES
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ENERGY RANGE
FREQUENCY MIXING
IONS
OSCILLATIONS
RADIATIONS
ULTRAVIOLET RADIATION